Patents by Inventor Achim Sorg

Achim Sorg has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Preparation of isomerically pure substituted cyclohexanols
    Patent number: 8709751
    Abstract: The present invention relates to the preparation of isomerically pure substituted cyclohexanols starting from a mixture of cis/trans substituted cyclohexanols which comprises reacting the cis/trans mixture of a substituted cyclohexanol with a dicarboxylic acid anhydride in the presence of a lipase, to give the trans semi-ester which is separated off from the unreacted substituted cyclohexanol cis isomer.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: April 29, 2014
    Assignee: BASF SE
    Inventors: Melanie Bonnekessel, Klaus Ditrich, Jürgen Däuwel, Achim Sorg, Wolfgang Ladner, Bryan Cooper, Rene Backes
  • Preparation of Isomerically Pure Substituted Cyclohexanols
    Publication number: 20120135483
    Abstract: The present invention relates to the preparation of isomerically pure substituted cyclohexanols starting from a mixture of cis/trans substituted cyclohexanols which comprises reacting the cis/trans mixture of a substituted cyclohexanol with a dicarboxylic acid anhydride in the presence of a lipase, to give the trans semi-ester which is separated off from the unreacted substituted cyclohexanol cis isomer.
    Type: Application
    Filed: November 23, 2011
    Publication date: May 31, 2012
    Applicant: BASF SE
    Inventors: Melanie Bonnekessel, Kalus Ditrich, Jurgen Dauwel, Achim Sorg, Wolfgang Ladner, Bryan Cooper, Rene Backes